A torque arm structure for a reducer

Abstract

The present invention relates to a torque arm structure for a speed reducer, comprising a box, a torque arm body connected to the outside of the box, a wheel axle connected to the torque arm body, one end of the wheel axle connected to the output shaft of the speed reducer, and the other end connected to the driving wheel, the driving wheel is located inside the box, the upper and lower parts of the torque arm body are connected to the box through support pins, the support pins are both inserted into mounting holes, the mounting holes are located on the torque arm body, and a vibration-damping bushing is provided between the support pins and the mounting holes. The present invention can effectively improve the upper limit of torque and the impact resistance, effectively improve the service life of the torque arm structure, and is easy to apply and promote.

Description

Technical Field

[0001] The invention relates to the technical field of speed reducer installation, and in particular to a torque arm structure for a speed reducer. Background Art

[0002] With the development of intelligent vertical warehouse technology in the warehousing industry, the requirements for stacker cranes in terms of operating speed, operating frequency, operating safety, lightweight, stability, etc. are becoming increasingly higher. The reducer used in the walking structure is an important power source for the stacker crane, and the performance of the reducer directly affects the various performances of the stacker crane.

[0003] The reducer is a device that matches the speed and transmits torque between the prime mover and the working machine or actuator. The torque arm is the mounting accessory of the reducer, which is generally installed on the reducer housing to support the reducer motor, so that the weight of the reducer is fully pressed on the shaft and the shaft is not easily deformed even after long-term use. The stacker will produce large vibrations during its movement. The power of the reducer is large, and the vibration phenomenon will be more obvious. In addition, when the reducer is in working state, it also needs to be frequently reversed, which will also produce a large impact. This vibration and impact will be transmitted to the torque arm, and the existing torque arm structure has a low torque upper limit and poor impact resistance, which makes the torque arm easy to damage and has a low service life, which cannot meet the use requirements. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the torque arm structure in the prior art, that is, the torque upper limit is low and the impact resistance is poor.

[0005] In order to solve the above technical problems, the present invention provides a torque arm structure for a reducer, including a box body, a torque arm body is connected to the outer side of the box body, a wheel axle is connected to the torque arm body, one end of the wheel axle is connected to the output shaft of the reducer, and the other end is connected to the driving wheel, the driving wheel is located inside the box body, the upper and lower parts of the torque arm body are connected to the box body through support pins, the support pins are penetrated in mounting holes, the mounting holes are located on the torque arm body, and a vibration-damping bushing is arranged between the support pin and the mounting hole.

[0006] In one embodiment of the present invention, the vibration-damping bushing is a polyurethane sleeve.

[0007] In one embodiment of the present invention, the torque arm body includes a first end face and a second end face which are parallel to each other, the first end face is in contact with the box body, the second end face is connected to the housing of the reducer, and the support pin shaft passes through the first end face and out of the second end face.

[0008] In one embodiment of the present invention, the mating surface between the box body and the first end surface is a milling plane.

[0009] In one embodiment of the present invention, the box body and the first end surface are connected by fastening bolts.

[0010] In one embodiment of the present invention, the support pin shaft passes through the box body and the torque arm body in sequence and then comes out. The passing end of the support pin shaft is provided with an annular groove, and a shaft retaining spring is connected in the annular groove. The passing end of the support pin shaft is also sleeved with a first washer, and the first washer is located between the shaft retaining spring and the torque arm body. The shaft spring is used to abut the first washer against the torque arm body.

[0011] In one embodiment of the present invention, the torque arm structure also includes a press sleeve and a locking nut, and the protruding end of the support pin shaft is sequentially provided with a first washer, a shaft retaining ring, a press sleeve and a locking nut, and the locking nut is connected to the support pin shaft through a thread, and the locking nut is used to press the press sleeve against the first gasket.

[0012] In one embodiment of the present invention, a rotation-stopping member is further provided on the outside of the locking nut, and the rotation-stopping member includes a rotation-stopping body, a screw rod is connected to the rotation-stopping body, a threaded hole is provided on the support pin shaft, the screw rod is screwed into the threaded hole and causes the rotation-stopping body to press against the locking nut.

[0013] In one embodiment of the present invention, the locking nut is a round nut.

[0014] In one embodiment of the present invention, the output shaft of the reducer is a hollow shaft, and the hollow shaft and the wheel axle are connected by a key.

[0015] The above technical solution of the present invention has the following advantages compared with the prior art:

[0016] The torque arm structure for the reducer described in the present invention can effectively increase the torque upper limit and improve the impact resistance, and is conducive to reducing operating noise, effectively increasing the service life of the torque arm structure, and is effectively applicable to reducers of light or heavy weight, is easy to apply and promote, and can effectively meet the needs of efficient operation of stackers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 is a schematic diagram of a torque arm structure for a speed reducer of the present invention;

[0019] Figure 2 yes Figure 1The schematic diagram of the structure of the torque arm structure after the box is removed;

[0020] Figure 3 yes Figure 2 A schematic structural diagram of the torque arm structure at another angle shown;

[0021] Figure 4 yes Figure 1 A side view of the torque arm structure shown;

[0022] Figure 5 yes Figure 4 Sectional view at AA in the middle;

[0023] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0024] Figure 7 yes Figure 4 A top view of the torque arm structure shown;

[0025] Figure 8 yes Figure 4 A left side view of the torque arm structure shown;

[0026] Fig. 9 yes Figure 1 Schematic diagram of the installation of the middle torque arm body and the support pin;

[0027] Fig.10 yes Figure 1 The structural diagram of the middle torque arm body;

[0028] Explanation of the reference numerals in the drawings in the specification: 1. housing; 2. driving wheel; 3. axle; 4. reducer; 5. torque arm body; 51. mounting hole; 52. first end face; 53. second end face; 6. support pin; 7. vibration-damping bushing; 8. first washer; 9. shaft retaining spring; 10. pressing sleeve; 11. locking nut; 12. anti-rotation piece; 121. anti-rotation body; 122. screw. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0030] Reference Figure 1-Figure 8As shown, this embodiment discloses a torque arm structure for a reducer, including a box body 1, a torque arm body 5 is connected to the outside of the box body 1, a wheel shaft 3 is connected to the torque arm body 5, one end of the wheel shaft 3 is connected to the output shaft of the reducer 4, and the other end is connected to the driving wheel 2, the driving wheel 2 is located inside the box body 1, the upper and lower parts of the torque arm body 5 are connected to the box body 1 through the support pin 6, and the support pin 6 is penetrated in the mounting hole 51, as shown in FIG. Fig.10 As shown, the mounting hole 51 is located on the torque arm body 5 , and a vibration-damping bushing 7 is provided between the support pin 6 and the mounting hole 51 .

[0031] The above structure can effectively increase the upper torque limit of the torque arm structure by arranging support pins 6 on the upper and lower parts of the torque arm body 5; by arranging a vibration-damping bushing 7 between the support pin 6 and the mounting hole 51, the vibration / impact generated during its own operation can be greatly reduced, which is beneficial to weaken the sudden increase in axial force when the motor is suddenly started or stopped, and can play a good protective role on the reducer 4 and the torque arm body 5. It can also effectively buffer the impact generated by the forward and reverse rotation of the reducer 4 during operation, thereby effectively ensuring the service life of the torque arm structure, and at the same time effectively reducing working noise, ensuring the safety of operation, and reducing maintenance costs.

[0032] In one embodiment, the vibration-damping bushing 7 is made of a polyurethane sleeve, which has excellent elasticity, as well as good elongation, compression strength, softness and good chemical stability. It can ensure the vibration-damping effect while also effectively ensuring its durability.

[0033] In one embodiment, if Figure 5-Figure 6 As shown, the torque arm body 5 includes a first end face 52 and a second end face 53 which are parallel to each other. The first end face 52 is tightly fitted with the housing 1 , and the second end face 53 is connected to the housing of the reducer 4 . The support pin 6 passes through the first end face 52 and passes through the second end face 53 .

[0034] Furthermore, the support pin 6 and the first end surface 52 are perpendicular to each other.

[0035] In one embodiment, the mating surface between the box body 1 and the first end surface 52 is a milling plane to ensure flatness and improve the connection stability between the box body 1 and the torque arm.

[0036] In one embodiment, the box body 1 and the first end surface 52 are connected by fastening bolts to better ensure the connection stability between the two and facilitate disassembly and replacement.

[0037] Furthermore, the box body 1 and the first end surface 52 are connected by a plurality of fastening bolts, and the plurality of fastening bolts are evenly distributed in the circumferential direction to ensure uniform force.

[0038] In one embodiment, the second end face 53 and the housing of the reducer 4 are also connected in a detachable manner. For example, the second end face 53 and the housing of the reducer 4 can be connected via a flange, and the second end face 53 and the flange are also connected via fastening bolts.

[0039] In one embodiment, if Figure 6 As shown, the support pin 6 passes through the box body 1 and the torque arm body 5 in sequence and then comes out. The outgoing end of the support pin 6 is provided with an annular groove, in which a shaft retaining spring 9 is connected. The outgoing end of the support pin 6 is also sleeved with a first washer 8, and the first washer 8 is located between the shaft retaining spring 9 and the torque arm body 5. The shaft spring is used to abut the first washer 8 against the torque arm body 5 to limit the vibration-damping bushing 7 and prevent the vibration-damping bushing 7 from falling off.

[0040] Furthermore, the torque arm structure also includes a pressing sleeve 10 and a locking nut 11. The protruding end of the support pin 6 is provided with a first washer 8, a shaft retaining spring 9, a pressing sleeve 10 and a locking nut 11 in sequence. The locking nut 11 is connected to the support pin 6 through a thread, and the locking nut 11 is used to press the pressing sleeve 10 against the first gasket. By rotating the locking nut 11, the components of the protruding end of the support pin 6 can be locked and fixed. The above structure can better prevent the vibration-damping bushing 7 from falling off. When the shaft retaining spring 9 is damaged, the position of the vibration-damping bushing 7 can still be guaranteed by the pressure of the pressing sleeve 10 without falling off.

[0041] In one embodiment, if Figure 6 and Fig. 9 As shown, a rotation-stopping member 12 is also provided on the outside of the locking nut 11, and the rotation-stopping member 12 includes a rotation-stopping body 121, to which a screw 122 is connected, and a threaded hole is provided on the support pin shaft 6. The screw 122 is screwed into the threaded hole and makes the rotation-stopping body 121 press against the locking nut 11 to tighten the locking nut 11.

[0042] The preload of the locking nut 11 can be adjusted by adjusting the screwing depth of the screw rod 122 on the anti-rotation member 12 and the support pin 6 .

[0043] In one embodiment, the locking nut 11 is a round nut.

[0044] Furthermore, the locking nut 11 may adopt a double-nut anti-loosening structure to better enhance the stability and reliability of the structure.

[0045] In one embodiment, the output shaft of the reducer 4 is a hollow shaft, the hollow shaft and the axle 3 are kept concentric, and the hollow shaft and the axle 3 are connected by a key to achieve power transmission between the hollow shaft and the axle 3.

[0046] Furthermore, when the keys are connected, flat keys may be used, but are not limited to the flat key type, and other types of keys may also be used.

[0047] In one embodiment, the support arm is parallel to the axis of the axle 3 .

[0048] In the torque arm structure for the reducer of the above embodiment, when in use, the driving wheel 2 moves along the corresponding track, thereby driving the reducer 4 to move together. It can be understood that the bottom of the box body 1 is open to expose the bottom of the driving wheel 2, so that the driving wheel 2 can contact the track, so that the driving wheel 2 can move along the track together with the reducer.

[0049] The above-mentioned track can be a steel rail or other types of tracks, and the track route can be set according to the actual situation of stacking.

[0050] When the reducer 4 is connected to the axle 3, the reducer 4 can be placed horizontally or vertically, which can be determined according to the actual application space and location.

[0051] The torque arm structure for the reducer in the above-mentioned embodiment can effectively increase the upper limit of torque, improve impact resistance and reduce operating noise, ensure the smooth operation and impact resistance of the mechanism, effectively improve the service life of the torque arm, and can be suitable for reducers with light or heavy weights, ensuring that the reducer is not prone to shaft deformation during long-term use, and providing good protection for the reducer; the overall structure is compact and small in size, and can be used in narrow shelf aisles, which is also beneficial for saving occupied space; the overall weight is light, easy to move, has good motion reliability, small inertia moment, and is easy to maintain.

[0052] The torque arm structure for the reducer in the above embodiment can better meet the needs of a high-power stacker, so that the stacker can operate at high speed, efficiently and stably, and can also effectively ensure the service life and safety of the stacker.

[0053] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A torque arm structure for a reducer, characterized in that: The invention comprises a box body, the outer side of the box body is connected to a torque arm body, the torque arm body is connected to a wheel shaft, one end of the wheel shaft is connected to the output shaft of the reducer, and the other end is connected to the driving wheel, the driving wheel is located inside the box body, the upper and lower parts of the torque arm body are connected to the box body through support pins, the support pins are both inserted in mounting holes, the mounting holes are located on the torque arm body, and a vibration-damping bushing is provided between the support pins and the mounting holes; The torque arm body comprises a first end face and a second end face which are parallel to each other, the first end face is fitted with the box body, the second end face is connected with the housing of the reducer, and the support pin shaft passes through the first end face and passes through the second end face; The support pin shaft passes through the box body and the torque arm body in sequence and then passes out, and an annular groove is provided at the passing end of the support pin shaft, and a shaft retaining spring is connected in the annular groove. A first washer is also sleeved at the passing end of the support pin shaft, and the first washer is located between the shaft retaining spring and the torque arm body, and the shaft retaining spring is used to abut the first washer against the torque arm body; It also includes a pressing sleeve and a locking nut, wherein the protruding end of the support pin is sequentially provided with a first washer, a shaft retaining ring, a pressing sleeve and a locking nut, the locking nut is connected to the support pin through a thread, and the locking nut is used to press the pressing sleeve against the first washer; The locking nut is also provided with a rotation-stopping member on the outside, and the rotation-stopping member includes a rotation-stopping body, a screw rod is connected to the rotation-stopping body, a threaded hole is provided on the support pin shaft, the screw rod is screwed into the threaded hole and the rotation-stopping body is pressed against the locking nut.

2. The torque arm structure for a reducer according to claim 1, characterized in that: The vibration-damping bushing is a polyurethane bushing.

3. The torque arm structure for a reducer according to claim 1, characterized in that: The mating surface between the box body and the first end surface is a milling plane.

4. The torque arm structure for a reducer according to claim 1, characterized in that: The box body and the first end surface are connected via fastening bolts.

5. The torque arm structure for a reducer according to claim 1, characterized in that: The locking nut is a round nut.

6. The torque arm structure for a reducer according to claim 1, characterized in that: The output shaft of the reducer is a hollow shaft, and the hollow shaft and the wheel axle are connected by a key.

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